Here's Who Made Gartner's 2016 Cloud IaaS Magic Quadrant

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Global spending for public cloud is expanding every quarter by roughly 50 percent, and yet Gartner's Magic Quadrant for IaaS keeps shedding vendors.

Only 10 Infrastructure-as-a-Service providers even qualified for ranking among the four quadrants this year, down from 15 in 2015. Those pared from the field were Interoute, Joyent, Verizon Terremark, Dimension Data and CSC.

Consolidation in the industry is even more pronounced when you look at the Leaders' quadrant.

"The market for cloud IaaS has consolidated significantly around two leading service providers," Gartner's latest report stated, referring to Amazon Web Services and Microsoft Azure. "The future of other service providers is increasingly uncertain and customers must carefully manage provider-related risks."

That means enterprise buyers must not only consider costs and services when shopping around for a provider, but also vendors' roadmaps for evolving their strategy and technology.